But as we know, the part eventually went to the now Emmy-nominated Taylor Schilling. "She had other things to do," Kohan said of Holmes. "And also in the beginning, no one knew what this was."

Funny enough, Holmes told me over the weekend while she was promoting her new movie The Giver that OITNB is one of her favorite shows.

Now let's say Holmes snags a guest spot on the Netflix series, whom should she play?

"I'm a big fan of Katie Holmes," Schilling said last night. "She could be friends with Lorna or like Lorna's Boston sister." (Lorna, played by Yael Stone, is in prison for fraud and stalking a man she went on one date with.)

Kate Mulgrew, who plays Red on the show, issued a warning to Ms. Holmes. "She better watch herself," Mulgrew said. "Pretty girls have to watch out in that prison."

Holmes joked that if she was ever on the show, she could finally show off her tattoos.

"No, I don't have any tattoos," she added with a laugh. "My child would kill me."

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